The victims were then told to board a train with the two men where they were persuaded to hand over the pin codes for their phones.

Detectives have established the men approached the victims at at 3.48pm on Saturday, September 29, 2018, before they made the victims board the train. The two men then left the train at Elmers End and got onto a tram. They exited the tram at Blackhorse Lane.

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Detectives have now released CCTV images of two men they wish to speak to.

A spokesman for BTP said: "Officers believe the men shown in these CCTV images may have information which could help their investigation."

Anyone who recognises the men or who has any information about the incident is asked to contact BTP by texting 61016 or calling 0800 40 50 40, quoting reference number 369 of 29/09/18. Alternatively call Crimestoppers anonymously on 0800 555 111.

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